Audiphone.



No. 883,003. PATENTED MAR. 24, 1908.

O. J. DAVY.

AUDIPHONE.

APPLICATION FILED HAYS, 1907.

2 SHEETS-SHEET 1.

PATENTED MAR. 24, 1908.

0. J. DAVY.

AUDIPHONE. ARPLIGATIOH FILED MAY 3. 1907.

2 SHEETS-SHEET 2.

Suueufoz 2/95 b1 cones i1? STATES PATENT OFFICE.

ORRIN J. DAVY, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO GEORGE G.

SCHROEDER, OF WASHINGTON, DISTRICT OF COLUMBIA.

AUD IPHONE Specification of Letters Patent.

Patented March. 24, 1908.

Application fllad' Kay 8, 1907. Serial No. 371,649.

zen of the United States, residin at Wash-' ington, in the District of Columbia, have invented certain new and useful Im rovements -in Audiphones, of which the fol owing is a specification.

This invention relates to certain new and useful improvements in audiphones, and it has for its object the production of a simple and inex ensive instrument of this character adapted for use by persons who are suffering from impaired hearing, and by means of which sound vibrations are communicated directly to the ear drums of the user.

The invention will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawing z-Fi'gure l is a perspective view illustrating the method of using my improved audiphone. Fig. 2, is a perspective view of the instrument; and Fig. 3, is a sectional view of one of the pole ends of the magnet and the attached receiver.

The instrument consists of the flexible yoke 1, made preferably of s ring steel and iaving the hardened or inflexi le steel discus pieces 2, attached to the ends thereof. The said pieces 2, are laminated upon the ends of the yoke 1, and are located upon the op 0- site sides of the ends of the said yoke. he soft iron cores 3, pass transversely through the ends of the yoke and the adjacent pieces 2, and terminate at their inner'ends in the vicinity of the dia hragms 4. The ear pieces 5, are substantia ly funnel shaped and hold the diaphragms 4, the large ends of said ear ieces being closed by said discus pieces.

he electric wires 6 enter the ear pieces 5, and wind about the cores 3, and attach with the inner pieces 2. The said wires also connect with the battery 7, which is referably located in the same casing as t at u on which the transmitter 8 is located. he said transmitter is of the same construction as those usually employed in telephones and needs no further description here. The yoke 1 and the pole pieces 2, are preferably in the form of a magnet of a permanent nature, and receive in addition the magnetism imparted by the enerator 7, and the ear pieces 5, cores 3 and diaphragms 4 form receivers. The yoke 1, straddles the head of the wearer and the ends or oles of the said yoke lie opposite the ears.- he funnel shaped ear pieces 5 are inserted in the outer ears of the wearer or patient.

The battery 7, is carried in a pocket of the clothing of the wearer and the transmitter is exposed above the ed e of the ocket as illustrated in Fig. 1, o the drawing. The sound vibrations are taken up by the transmitter and electrically conveyed by the.

wires 6, to the receivers at which points the diaphra ms 4 give off synchronous vibrations w ich are directed through the ear pieces 5 against the ear drums.

Having described my invention, what I claim as'new and desire to secure by Letters Patent is:

1. An audiphone comprising a flat yoke, discus ieces secured directly to theends of said ydke, funnel sha ed ear pieces having their larger ends close by said discus pieces, a diaphragm in each ear iece, and means for electrically vibrating said diaphragms. 2. An audiphone comprising a flatyoke, discus pieces secured directly to the ends of said yoke, funnel sha ed ear pieces having their larger ends close by said discus pieces, a diaphragm in each ear piece, a core for each diaphragm, each core being passed through .said yo e adjacent each end thereof, funnel shaped ear pieces having their larger ends closed by the innermost discus pieces of each set, a diaphragm in each ear iece, and means for electrlcally vibrating said diaphragms.

4. An audlphone comprising a flat yoke, discus ieces secured directly to each face of said yo e adjacent each end thereof, funnel shaped ear pieces having their larger ends closed by the innermost discus pieces of each set, a diaphragm in each ear piece, a core for each diaphragm, each core being passed throu h one end of said yoke and also through the a acent discus pieces, and means for energizing said cores.

5. An audiphone comprising a fiat yoke, discus ieces secured directly to the ends of said yo e, funnel sha ed ear pieces having their larger ends close by said discus pieces, a diaphragm in each ear piece, a core for each diaphragm, each core being passed through one end of said yoke and also through the adjacent discus pieces, and an electric circuit one end of said yoke and also through the adfor energizing said core, said circuit including said yoke.

6. An audiphone comprising a flat yoke, discus pieces secured directly to the ends of said yoke, funnel shaped ear pieces having their larger ends closed by said discus pieces, a diaphragm in each ear piece, a core for each diaphragm, each core being passed through one end of said yoke and also through the adjacent discus pieces, an electric circuit including conductors having each end wrap ed' around one of said cores and its termina in contact with the adjacent discus plate, and a transmitter also in said circuit.

7. An audiphone comprising a fiat yoke, discus pieces secured directly to the ends of said yoke, funnel sha ed ear pieces having their larger ends close by said discus pieces, a diaphragm in each ear piece and spaced apart from the adjacent discus ieces, a core for each diaphragm, each core eing passed through one end of said yoke and also through the adjacent discus pieces, an electric circuit includin conductors having one end wrapped arounil each of said cores at a point between the diaphragm and the adjacent discus ieces, the termlnal being in contact with the adjacent discus plate, and a transmitter also in said circuit. I

8. An audiphone com rising a flat yoke of flexible material, inflexi 1e discus ieces secured directly to the endsof said yo e, funnel shaped ear ieces having their larger ends closed by said discus pieces, a diaphra m in each ear piece, and means for electrica y vibrating said diaphragms.

In testimony whereof I affix my signature, "'n presence of two witnesses.

ORRIN J. DAVY. Witnesses:-

WM. L. STUARD, FQLIEBSCHUTZ. 

